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Gravitational Collapse of Spongebob (Score: 151+ in 21 hours)

Link: https://readhacker.news/s/64fdt
Comments: https://readhacker.news/c/64fdt
What's worked in Computer Science: 1999 vs. 2015 (2015) (❄️ Score: 150+ in 2 days)

Link: https://readhacker.news/s/64b98
Comments: https://readhacker.news/c/64b98
Show HN: SatCat5, the open-source FPGA Ethernet switch (Score: 150+ in 1 day)

Link: https://readhacker.news/s/64faS
Comments: https://readhacker.news/c/64faS

We've just launched v2.5 of SatCat5, the open-source FPGA Ethernet switch [1]. SatCat5 contains various FPGA building blocks that let you build a custom mixed-media Ethernet switch. It was originally intended for cubesats [2] but has many other potential applications.
The headline feature for this release is support for the IEEE-1588 Precision Time Protocol (PTP). SatCat5 has demonstrated end-to-end synchronization to within 50 ps-rms, which is approaching the world-leading performance of CERN's White Rabbit Project [3]. Except we're doing time-transfer over regular, non-synchronous Ethernet. The key breakthrough is a new technology for digital timestamps that we've published in IEEE Access [4].
This project was featured on HN back in 2023 [5]. Since then, we've changed to the CERN-OHL-W v2.0 license, which has much better legal clarity for FPGA projects.
[1] https://github.com/the-aerospace-corporation/satcat5
[2] https://digitalcommons.usu.edu/smallsat/2020/all2020/174/
[3] https://white-rabbit.web.cern.ch/documents/White_Rabbit-a_PT...
[4] https://ieeexplore.ieee.org/abstract/document/10367970
[5] https://news.ycombinator.com/item?id=34817550
2600.network Dialup Service (Score: 150+ in 9 hours)

Link: https://readhacker.news/s/64hnt
Comments: https://readhacker.news/c/64hnt